Abstract
Electrochemically synthesized polythiophene films containing BF4−-anions, PT-BF4, have been carefully reduced and re-oxidized with FeCl4-anions to obtain highly conducting PT-FeCl4-films. The maximum conductivity we have observed for this complex is 50 Scm−1 which corresponds to a maximum dopant concentration of approximately 26 mol-%.
Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.
PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.
Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.
PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 213-218 |
| Journal | Synthetic Metals |
| Volume | 18 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1987 |
| MoE publication type | B1 Article in a scientific magazine |
| Event | International Conference of Science and Technology of Synthetic Metals, ICSM '86 - Kyoto, Japan Duration: 1 Jun 1986 → 6 Jun 1986 |